In the book “Mortal Engines” most cites have became traction cites that can move around. They have to eat other cites and keep from being eaten. The city of London has been traveled at full speed towards The Shield Wall and Tom, the main character, is thrown off of London and a girl named Hester Shaw is thrown off too. They both have to work together to get back to London. In the beginning, the two travelers don’t like each others’ company. As the book progresses there is a piece of old technology that’s called MEDUSA. It’s from the sixty minute war, it has tremendous power, and it destroyed a city that was chasing it. Tom and Hester came back to London just in time to stop London from destroying The Shield Wall. To get the full story read “Mortal Engines”.

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